Pongnas Ouchstone Portable Gold Test Stone (Large) - Silver, Ideal for Jewelry, Antique Gold, Silver, Platinum Collectibles - Changes Color Based on Purity
Special Features
changes color based on purity. Very easy to use
Ideal for testing jewelry, , antique gold, silver, platinum collectibles
This touchstone is used to verify the gold content in items
This solution works for testing any gold which you believe to be 10K, 14K, 18K, 22-24K, silver, and platinum pure
Apply a drop test on touchstone, real gold will stay on the touchstone, fake one will be dissolved or oxidized to blue
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